#311BA6#311BA6

#311BA6 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 37.0% C 0.202 H 277.1°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#311BA6
RGB	rgb(49, 27, 166)
HSL	hsl(249, 72%, 38%)
HSV	hsv(249, 84%, 65%)
CMYK	cmyk(70.5%, 83.7%, 0%, 34.9%)
CIE-LAB	lab(24.29, 50.29, -69.38)
CIE-LCH	lch(24.29, 85.69, 305.93°)
OKLab	oklab(37% 0.0251 -0.2005)
OKLCH	oklch(37% 0.202 277.1)
XYZ	xyz(8.5393, 4.1892, 36.4276)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311BA6 #90A61B

analogous

#1B4BA6 #311BA6 #761BA6

triadic

#311BA6 #A6311B #1BA631

tetradic

#311BA6 #A61B4B #90A61B #1BA676

square

#311BA6 #A61B4B #90A61B #1BA676

split-complementary

#311BA6 #A6761B #4BA61B

monochromatic

#120A3D #211271 #311BA6 #4124DB #6E58E4

Accessibility & contrast

On white

11.43

#311BA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#311BA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311BA6

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311BA6	#FFFFFF	#000000	##FFFFFF
##311BA6	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FAA

Deuteranopia (green-blind)

#0034A4

Tritanopia (blue-blind)

#004863

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #311ba6;
/* rgb */ color: rgb(49, 27, 166);
/* oklch */ color: oklch(37.0% 0.202 277.1);

Tailwind

colors: {
  custom: {
    50: '#7c5dc2',
    500: '#311ba6',
    950: '#000000',
  },
}

SCSS

$custom: #311ba6;
$custom-light: #7c5dc2;
$custom-dark: #000000;

JSON

{
  "hex": "#311ba6",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 166
  },
  "hsl": {
    "h": 249.496,
    "s": 72.021,
    "l": 37.843
  },
  "oklch": {
    "l": 0.36997,
    "c": 0.20203,
    "h": 277.1
  },
  "luminance": 0.0419
}

Semantic roles & 50–950 ramp

primary

#311BA6

secondary

#B5C756

accent

#EF39D2

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0413

muted

#7C7982

Preview Lab

Preview with #311BA6

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →